Q.No.60: - If we said one plane contains incident, reflected, refracted and normal, the other plane is the boundary surface between two materials. Then at which direction these two planes oriented with respect to each other?

Q.No.60: - If we said one plane contains incident, reflected, refracted and normal, the other plane is the boundary surface between two materials. Then at which direction these two planes oriented with respect to each other?

Ans: - These two planes must held perpendicular to each other.